Factor Tree building procedure:
- Divide the given composite number by its smallest prime factor
- If the resulting quotient is a composite number, divide it by its smallest prime factor
- Repeat until resulting quotient is a prime number
![Prime Factorization of 405 with a Factor Tree Prime Factorization of 405 with a Factor Tree](https://mathondemand.com/wp-content/plugins/factortreeapp/includes/images/Prime%20Factorization%20of%20405%20with%20a%20Factor%20Tree.png)
Prime Factorization of 405: 405 = 3 x 3 x 3 x 3 x 5
Prime Factorization of 405 in Exponential Form: 405 = 34 x 5
Note: While the Prime Factorization of a Composite Number is unique, corresponding Factor Trees will differ if a different procedure is used